Shower accessory



FIG. 1 is a top, front, and right side perspective view of a shower accessory showing our new design, the broken-line disclosure being for illustrative purposes only and forming no part of the claimed design;

FIG. 2 is left side elevational view thereof, the right side being a mirror image of that shown;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a rear elevational view thereof. 

The ornamental design for a shower accessory, as shown and described. 